Zhang's place was difficult to find based on the instructions I was given. It would be helpful to know that at the "Cool House" sign, you actually turn left in front of the sign and walk down that alley towards the security officer's booth. Then go around the corner (behind the first tall building that was next to the sign) and you'll see the actual entrance into the Cool House tower. It is actually the second building instead of the first one that you see right behind the Cool House sign. It took me more than 5 minutes just to figure this out.
Zhang's place was very close to a railway station for the MRT line, so it was easy to get around. His friend Bill who checked us in and gave us keys was very kind, but he only spoke very simple English. I often forgot to slow down when I was speaking and so I confused Bill a lot. The shower could have been cleaner at the condo and there was no hand soap in the bathroom. However, overall my group had a pleasant stay. 5 people were easily accommodated! Two people had the bedroom, there were two extra beds in the living room, and only one of us slept on a sleeping pad on the floor. All the linens were fresh and we enjoyed the best hot shower at Zhang's out of all of the other accommodations on the whole trip!